Questions tagged [subsampling]
116 questions
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Resize an image to original size after sub sampling
I am subsampling an image using matlab. But I have a task to reset the subsampled image to original size. I have done it with nearest neighbour approximation and averaging adjacent pixels which is working fine.Is there any other algorithm to do…
indu
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Sampling based on unique ID in r
I have 7500 messages, each with corresponding unique ID number. I have split up the messages into the seasons, and have have a block of messages for the seasons: winter 2013 ---- > spring 2014.
I wish to create a sample of 1000 messages that is…
WeakLearner
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How does the UYVY (YUV 4:2:2, Y422, UYNV, HDYC) colour system handle odd pixel counts?
According to a reference that I've been reading, some planar YUV formats (e.g. UYVY) use macropixels which contain data for multiple pixels - specifically, in the case of UYVY, luma values per pixel and U and V samples for every other horizontal…
Polynomial
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How to Sub-Sample Dataset
I'm going to implement svm(support vector machines) and various other classifying algorithms.
But my train dataset is of 10Gb. How can I sub-sample it ?
This is a very basic level question but I'm a beginner.
Thank for the help
Saurabh Saxena
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Pandas - consecutive values must be different
I want to subsample rows of a dataframe such that all pairs of consecutive values in a given column are different, if 2 of them are the same, keep, say, the first one.
Here is an example
p = [1,1,2,1,3,3,2,4,3]
t = range(len(p))
df =…
Baron Yugovich
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DO i have to apply activation function on Max value in Max pooling?
I am trying to implement convolutional neural network by Lecun. I have two questions.
1) Do i have to multiply activation function on the (max_value * weight_value) in the maxpooling layer.
2) if yes than in backpropagating the error as i…
khan
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How to subsample a data frame based on a datetime column in R
I would like to subsample a data frame at hourly intervals from a datetime column, beginning with the time value in the first row of the data frame. My data frame runs at 10-minute intervals from the first to the last row. Example data is…
Emily
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Sampling Data into two Groups
I am seeking help to make the code below efficient. I not satisfied though it works. There is bug to be fixed (currently irrelevant). I am using < random> header for the first time and stable_partition for first time.
The Problem…
Prasad
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Prove that the equivalent number of bits per pixel for the YUV 4:2:0 scheme is 12
Prove that the equivalent number of bits per pixel for the YUV 4:2:0 scheme is 12
Osama Al-far
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Normal distributed sub-sampling from a numpy array in python
I have a numpy array whose values are distributed in the following manner
From this array I need to get a random sub-sample which is normally distributed.
I need to get rid of the values from the array which are above the red line in the picture.…
Sampath Kumar
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Error on findViewById - Subsampling Scale Image View - Android
I'm trying to test the code in this tutorial "Subsampling Scale Image View" to make a zoom image pinch, but it gives one error on .findViewById(id.imageView); - cannot resolve symbol..
My XML layout:
cafc
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